Gross anatomical features of the oropharyngeal cavity of the ostrich (Struthio camelus)

Tivane, Catarina; Rodrigues, Márcio Nogueira; Soley, John Thomson; Groenwald, Herman B.

doi:10.1590/s0100-736x2011000600015

Cited by 19 publications

(21 citation statements)

References 14 publications

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“…This result corroborate with those reported by Gussekloo & Bout (2005) and Gussekloo (2006) in the rhea, by Tivane (2011) in the ostrich, and by Crole & Soley ( 2010) in the emu. Different to what have been demonstrated by these authors and from those found by us, Tadjalli et al (2008) described this structure in the ostrich as "median longitudinal mucosal fold".…”

Section: Roof Of the Oropharynxsupporting

confidence: 93%

“…This finding seems to approach to the illustration of the ostrich oropharynx by Göppert (1903) which also appears to indicate this regional differentiation. However, histological results of this region in the ostrich revealed that this distinction was due to the presence of mucus-secreting glands in the darker region surrounding the choana and extending onto the pharyngeal folds (Tivane 2011). Reverse situation was described by Crole & Soley (2010) in the emu.…”

Section: Roof Of the Oropharynxmentioning

confidence: 97%

“…Such data are different by those found in the ostrich by Tivane (2011) and in the emu (Crole & Soley 2010). The pharyngeal cleft was described as a median longitudinal fissure which connects the infundibulum (into which the common Eustachian tubes [Tubae auditivae] opening) to the pharynx (McLelland 1979(McLelland , 1993.…”

Section: Roof Of the Oropharynxmentioning

confidence: 99%

“…It has been reported that the region around the pharyngeal folds in the ostrich (Tivane 2011) and in the emu (Crole & Soley 2010) were seen to overlap in the midline and that these structures contained mucus-secreting glands and masses of lymphoid tissue, thus constituting pharyngeal tonsils (McLelland (1979). Additionally, the latter states that these structures make "a sharp boundary with the oesophagus".…”

Section: Roof Of the Oropharynxmentioning

confidence: 99%

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Gross morphology of rhea oropharyngeal cavity

et al. 2012

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Pesq. Vet. Bras. 32(Supl. The rhea (Rhea americana americana) is an american bird belonging to Ratite's family. Studies related to its morphology are still scarce. This study aims to describe the macroscopic structures of the oropharyngeal cavity. Five heads (2 to 6 months old) formalin preserved were anatomically dissected to expose the oropharynx. The oropharynx of the rhea was "bell-shaped" composed by the maxillary and mandibular rhamphotheca. The roof and floor presented two distinct regions different in colour of the mucosa. The rostral region was pale pink contrasting to grey coloured caudal region. The median longitudinal ridge extended rostrally from the apex of the choana to the tip of the beak in the roof and it is clearly more prominent and rigid than the homolog in the floor that appeared thin and stretched merely along the rostral portion of the regio interramalis. The floor was formed by the interramal region, (regio interramalis) tongue and laryngeal mound containing glove-shaped glottis. This study confirmed the basic morphology of the oropharinx of the rhea. However, important morphological information not previously described is highlighted and contradictory information present in the literature is clarified. rostral era rosa clara contrastando com a coloração cinza da região caudal. A linha longitudinal mediana se estendia rostralmente do ápice da coana ate a extremidade do bico no teto e esta era bem proeminente e rígida quanto a mesma estrutura no assoalho, esta apresentou-se estendida ao longo da porção rostral da região interramal. O assoalho estava formado pela região interramal, língua, glote e cartilagens da laringe com formato de dedos de luvas. O estudo confirma a morfologia básica da orofaringe das emas. Entretanto, importantes informações morfológicas não descritas anteriormente são destacadas e informações contraditórias presentes na literatura são esclarecidas.TERMOS DE INDEXAÇÃO: Morfologia, orofaringe, Rhea americana americana.

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Section: Roof Of the Oropharynxsupporting

confidence: 93%

Section: Roof Of the Oropharynxmentioning

confidence: 97%

Section: Roof Of the Oropharynxmentioning

confidence: 99%

Section: Roof Of the Oropharynxmentioning

confidence: 99%

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Gross morphology of rhea oropharyngeal cavity

et al. 2012

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“…A renewed interest has recently been shown in the morphology of the upper digestive tract of commercially important ratite species, particularly Struthio camelus (Linnaeus, 1758) (Tivane et al 2006;Porchescu 2007;Jackowiak and Ludwig 2008;Tadjalli et al 2008, Tivane 2008Guimarães et al 2009) and Dromaius novaehollandiae (Latham, 1790) (Crole and Soley 2009a, b, 2010a, b, 2011, as well as in the feeding mechanism employed by this group of birds (Bonga Tomlinson 2000;Gussekloo and Bout 2005).…”

Section: Introductionmentioning

confidence: 99%

Gross anatomical features of the tongue, lingual skeleton and laryngeal mound of Rhea americana (Palaeognathae, Aves): morpho-functional considerations

Crole

Soley

2012

Zoomorphology

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The final publication is available at http://www.springerlink.com/content/6j37487920884049/ Abstract The tongue body of Rhea americana is triangular and partially pigmented with each caudo-lateral margin displaying a round, sub-divided lingual papilla. The tongue root is a smooth, non-pigmented tract of mucosa. The tongue body is supported by the paraglossum and distal half of the rostral projection of the basihyal (RPB), and the tongue root by the proximal half of the RPB, body of the basihyal and proximal ceratobranchials. An urohyal is absent; however, peculiar to R. americana, the caudal margin of the cricoid body displays a median projection, which may represent the remnant of the urohyal incorporated into the cricoid. The laryngeal mound is less elevated, the arytenoid cartilages are smaller than in other ratites, and the caudal margin displays pharyngeal papillae that vary in shape and number. The unique morphology of the lingual skeleton and its positioning within the tongue of R. americana, the rostral insertion of the M. ceratoglossus, the absence of the urohyal (enhanced ventroflexion) and the caudal positioning and mobile attachment of the ensheathed basihyal to the paraglossum would appear to allow independent movement of the tongue body relative to the hyobranchial apparatus. Additionally, the deeply indented base and rostral oval opening in the paraglossum limits the length of cartilage present in the midline of the tongue body. This may allow the tongue the necessary flexibility for the lingual papillae to clean the choana. The cleaning action of the tongue would occur simultaneously Communicated by T. Bartolomaeus.M. Crole ( ) • J. Soley Department of Anatomy and Physiology, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort 0110, South Africa e-mail: martina.crole@up.ac.za with the previously described role of this organ and associated structures during feeding. Thus, the so-called reduced, ancestral tongue of R. americana may be structurally and functionally more complex than previously believed.

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Comparative gross and scanning electron microscopical study of the oropharyngeal roof of young and adult domestic pigeons (Columba livia domestica)

Mahdy

2020

Microscopy Res & Technique

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The present study aims to compare the morphology of the oropharyngeal roof of young and adult domestic pigeon (Columba livia domestica) by gross observation, morphometric measurements, and scanning electron microscopy (SEM). The oropharyngeal roof was divided into the palate and pharyngeal roof. The palate was narrow triangular in shape and concave along its length. It could be divided into a rostral part contained three longitudinal palatine ridges and a caudal part contained the choanal slit. The choanal slit consisted of narrow rostral and wide caudal parts. The edges of the narrow part were encircled by small caudomedially directed papillae. On the contrary, the edges of the wide part of slit were free from papillae. By SEM, the palatal mucosa in young pigeon showed primordia of small papillae which increased in number and size forming a longitudinal row of papillae parallel to the edges of the rostral narrow part of slit in adult pigeon. The surface of the pharyngeal roof appeared smooth in young pigeon, while in adult pigeon, it showed dome‐shaped elevations. The infundibular cleft had smooth edges. The caudal part of the pharyngeal roof formed an elevated transverse mucosal fold on which a transverse row of conical‐shaped papillae was present. In conclusion, our results documented the presence of some differences between the oropharyngeal roof of young and adult pigeon, which suggest a high degree of functional adaptation in adult pigeon to their diet compared to young pigeon. Such adaptations might increase the efficiency of food prehension in adult pigeon. The present study compared the morphology of the oropharyngeal roof of young and adult domestic pigeon by gross observation, morphometry, and scanning electron microscopy. The morphometrical data showed higher values in adult pigeon compared to young pigeon. The palatal mucosa and the pharyngeal roof of adult pigeon showed papillae and elevations that were not present in young pigeon. Our results suggest a high degree of functional adaptation in adult pigeon to their diet compared to young pigeon. Such adaptations might increase the efficiency of food prehension in adult pigeon.

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Gross anatomical features of the oropharyngeal cavity of the ostrich (Struthio camelus)

Cited by 19 publications

References 14 publications

Gross morphology of rhea oropharyngeal cavity

Gross morphology of rhea oropharyngeal cavity

Gross anatomical features of the tongue, lingual skeleton and laryngeal mound of Rhea americana (Palaeognathae, Aves): morpho-functional considerations

Comparative gross and scanning electron microscopical study of the oropharyngeal roof of young and adult domestic pigeons (Columba livia domestica)

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